It utilizes “key file” (aka “sk.dat”) to lock the logic down. Note that RSLogix 5000 (for ControlLogix) has a different method to edit/copy protect the logic via a tool called Source Protection Software where This password has been tested to work for SLC500 (Version 9.00.00 (CPR 9).The password ( ABUNLOCK) is in all upper case and no spaces (and no double quote).When you are prompted to enter a password/master password, enter “ABUNLOCK” as a password.Īnother way to unlock the PLC logic is to enter the following sequence of numbers, By configuring the emulator driver we let our working PC know how to communicate with the emulator. Open the PLC logic by double clicking the SLC500 PLC logic file (see image below). To make the situation worst, has not left any traces of documents and directions on how to unlock it. And he/she has locked the PLC logic (lets say for security reasons). I have been in situations where I am taken over a role of a resident PLC programmer who have left the organization.
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